Dynamic Power Management in Distributed Antenna Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional wireless systems employing distributed antenna systems do not optimize cell capacity based on real-time user requirements, leading to suboptimal performance in wireless telephone systems.
Innovation Solution
A method and system for dynamically optimizing downlink transmission power in distributed antenna systems by collecting carrier load information and varying transmission power for carriers based on pre-defined thresholds, using a power management control unit to adjust power levels and manage power distribution across multiple carriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If downlink transmission power is increased to meet peak usage demands, then network capacity is enhanced, but interference increases and power efficiency deteriorates
Solution Approach 1:
The patent implements dynamic power adjustment where the downlink transmission power is varied based on real-time carrier load information. The power management control unit continuously monitors carrier load and adjusts power levels accordingly, transitioning from static to dynamic power control to optimize network capacity while managing interference
Solution Approach 2:
The patent applies band selective power management where different power levels are assigned to different carriers based on their specific load conditions. Instead of uniform power allocation, the system identifies overloaded carriers and selectively increases power only for those specific carriers that need it, while maintaining or reducing power on underloaded carriers
2Reliability
If downlink transmission power is increased to enhance network capacity, then signal quality is maintained, but energy consumption increases
Solution Approach 1:
The patent changes the power parameter dynamically based on carrier load conditions. The power management control unit adjusts the downlink transmission power parameter in response to varying network conditions, increasing power only when and where needed to maintain signal quality, rather than maintaining high power continuously
Solution Approach 2:
The system automatically monitors its own carrier load conditions and self-adjusts power allocation without external intervention. The power management control unit collects carrier load information and autonomously makes power adjustment decisions, enabling the system to optimize its own energy consumption while maintaining signal quality
3Device complexity
If uniform power allocation is used across all carriers, then system complexity is reduced, but network performance optimization is limited
Solution Approach 1:
The patent segments the power management approach by carrier, treating each carrier individually based on its load characteristics. Instead of applying a single uniform power level to all carriers, the system divides power allocation into carrier-specific segments, allowing optimized power levels for each carrier while using standardized management procedures
Data Source
AI summary
A system and method for enhancing the performance in heterogeneous wireless access networks employing a distributed antenna system is disclosed. A control unit comprises a distributed antenna system management server which collects load information from each of the carriers. The control unit further comprises a power management decision engine which determines the optimal downlink transmission power level for the carriers based on the collected load information and a set of parameters related to the power for the carriers. Power levels may decrease to baseline parameters when the load on carriers decreases.